HPS-2007
18
2.4
Purity
a)
Connect the receiver to a 117V
AC
line
Turn on the TV and adjust bright to nominal position and contrast control to min. position,
saturation and volume to min. position.
b)
Apply to the antenna input a 60dB
µ
V level signal with 88% modulated “WHITE” pattern
(Frequency and channel factory defined)l
c)
Wait for pre-heating period
(30 minutes)
d)
Degauss the device appropriated.
e)
Increment the contrast controls to max. position, and wait for 3 minutes
f)
At a distance of 5 times the height of the screen, observe that no color dirty may appears.
g)
Repeat this procedures now utilizing a red pattern.
Note
:
ü
If the receiver is moved during the test procedure
, always degauss
again the device
